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2 years ago

Anybody know the answer? please help

Mathematics

2 answers:

katen-ka-za [31]2 years ago

7 0

Answer:

y=1/2x+2

Step-by-step explanation:

This equation is linear because the graph is a straight line. Therefore, use the slope-intercept form y=mx+b to create the equation.

To find m (the slope), pick two points like (0,2) and (2,3). Find the change in y over the change in x: (y2-y1)/(x2-x1).

y2=3, y1=2, x2=2, x1=0

(3-2)/(2-0)= 1/2

This is the slope which means the equation is one of the first 2 options.

Next find b (the y-intercept) by finding the y value on the graph when x=0. When x=0, y=2. Therefore, b=2 and the final equation is y=1/2x+2

scoray [572]2 years ago

5 0

Answer:

the first one. slope is 1/2 and y intercebt (b value) is positive 2.

Step-by-step explanation:

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Answer:

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2 years ago

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Answer:

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3 years ago

Write an algebraic expression to represents the verbal expression: the difference between the product of 4 and a number and the

Naily [24]

Answer:

$4n-n^2$

Step-by-step explanation:

I use 'n' as the unknown value, but you can use any letter you want as the variable.

The product of four and a number would be represented by '4 * n'. The ideal way to write this would be '4n', even though '4 * n' is also correct in value.

The square of the number would be n². Squaring a number is multiplying a number by itself.

The phrase 'difference between...' means subtraction.

Putting it together:

"The difference between the product of 4 and a number and the square of the number" would be:

$4n-n^2$

Hope this helps.

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3 years ago

Find the equation of the line that passes through (-2,3) and (4,-1).

horsena [70]

$Genera\ equation\ for\ line\\\\y=ax+b\\\\To\ find\ a\ and\ b\ substitude\ points\ (-2,3),\ (4,-1)\ into\ equation\\\\ \left \{ {{3=-2a+b}\ \ \ \ \atop {-1=4a+b\ |*-1}} \right.\\\\ \left \{ {{3=-2a+b}\ \ \ \ \atop {1=-4a-b\}} \right.\\+----\\\\Addition\ method\\\\4=-6a\ \ |:-6\\\\a=-\frac{4}{6}=-\frac{2}{3}\\\\b=3+2a=3+2* (-\frac{2}{3})=3-\frac{4}{3}=1\frac{2}{3}\\\\y=-\frac{2}{3}x+1\frac{2}{3}$

8 0

3 years ago